# -*- coding: utf-8 -*-
# #############################################################################
#
#    OpenERP, Open Source Management Solution
#    Copyright (C) 2004-2010 Tiny SPRL (<http://tiny.be>).
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU Affero General Public License as
#    published by the Free Software Foundation, either version 3 of the
#    License, or (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU Affero General Public License for more details.
#
#    You should have received a copy of the GNU Affero General Public License
#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
##############################################################################

#
# Please note that these reports are not multi-currency !!!
#

from osv import fields, osv
import tools


class purchase_report(osv.osv):
    _name = "purchase.report"
    _description = "Purchases Orders"
    _auto = False
    _columns = {
    'default_code': fields.char('Reference', size=64),
    'date': fields.date('Order Date', readonly=True, help="Date on which this document has been created"),
    'name': fields.char('Year', size=64, required=False, readonly=True),
    'day': fields.char('Day', size=128, readonly=True),
    'state': fields.selection([('draft', 'Request for Quotation'),
                               ('wait', 'Waiting'),
                               ('confirmed', 'Waiting Supplier Ack'),
                               ('approved', 'Approved'),
                               ('except_picking', 'Shipping Exception'),
                               ('except_invoice', 'Invoice Exception'),
                               ('done', 'Done'),
                               ('cancel', 'Cancelled')], 'Order State', readonly=True),
    'product_id': fields.many2one('product.product', 'Product', readonly=True),
    'warehouse_id': fields.many2one('stock.warehouse', 'Warehouse', readonly=True),
    'location_id': fields.many2one('stock.location', 'Destination', readonly=True),
    'partner_id': fields.many2one('res.partner', 'Supplier', readonly=True),
    'partner_address_id': fields.many2one('res.partner.address', 'Address Contact Name', readonly=True),
    'dest_address_id': fields.many2one('res.partner.address', 'Dest. Address Contact Name', readonly=True),
    'pricelist_id': fields.many2one('product.pricelist', 'Pricelist', readonly=True),
    'date_approve': fields.date('Date Approved', readonly=True),
    'expected_date': fields.date('Expected Date', readonly=True),
    'validator': fields.many2one('res.users', 'Validated By', readonly=True),
    'product_uom': fields.many2one('product.uom', 'Reference UoM', required=True),
    'company_id': fields.many2one('res.company', 'Company', readonly=True),
    'user_id': fields.many2one('res.users', 'Responsible', readonly=True),
    'delay': fields.float('Days to Validate', digits=(16, 2), readonly=True),
    'delay_pass': fields.float('Days to Deliver', digits=(16, 2), readonly=True),
    'quantity': fields.float('Quantity', readonly=True),
    'price_total': fields.float('Total Price', readonly=True),
    'price_average': fields.float('Average Price', readonly=True, group_operator="avg"),
    'negociation': fields.float('Purchase-Standard Price', readonly=True, group_operator="avg"),
    'price_standard': fields.float('Products Value', readonly=True, group_operator="sum"),
    'nbr': fields.integer('# of Lines', readonly=True),
    'month': fields.selection(
        [('01', 'January'), ('02', 'February'), ('03', 'March'), ('04', 'April'), ('05', 'May'), ('06', 'June'),
         ('07', 'July'), ('08', 'August'), ('09', 'September'), ('10', 'October'), ('11', 'November'),
         ('12', 'December')], 'Month', readonly=True),
    'category_id': fields.many2one('product.category', 'Category', readonly=True),
    'first_partner_categ': fields.many2one('res.partner.category', 'Partner Categ', readonly=True),
    'first_invoice_date': fields.date('Invoice Date', readonly=True),

    }
    _order = 'name desc,price_total desc'

    def init(self, cr):
        tools.sql.drop_view_if_exists(cr, 'purchase_report')
        cr.execute("""
            create or replace view purchase_report as (
                select
                    min(l.id) as id,
                    p.default_code,
                    s.date_order as date,
                    to_char(s.date_order, 'YYYY') as name,
                    to_char(s.date_order, 'MM') as month,
                    to_char(s.date_order, 'YYYY-MM-DD') as day,
                    s.state,
                    s.date_approve,
                    rp.first_partner_categ as first_partner_categ,
                    date_trunc('day',s.minimum_planned_date) as expected_date,
                    s.first_invoice_date as first_invoice_date,
                    s.partner_address_id,
                    s.dest_address_id,
                    s.pricelist_id,
                    s.validator,
                    s.warehouse_id as warehouse_id,
                    s.partner_id as partner_id,
                    s.create_uid as user_id,
                    s.company_id as company_id,
                    l.product_id,
                    t.categ_id as category_id,
                    (case when u.uom_type not in ('reference') then
                            (select id from product_uom where uom_type='reference' and category_id = u.category_id and active LIMIT 1)
                    else
                        u.id
                    end) as product_uom,
                    s.location_id as location_id,
                    sum(l.product_qty/u.factor) as quantity,
                    extract(epoch from age(s.date_approve,s.date_order))/(24*60*60)::decimal(16,2) as delay,
                    extract(epoch from age(l.date_planned,s.date_order))/(24*60*60)::decimal(16,2) as delay_pass,
                    count(*) as nbr,
                    (l.price_unit*l.product_qty*u.factor)::decimal(16,2) as price_total,
                    avg(100.0 * (l.price_unit*l.product_qty*u.factor) / NULLIF(t.standard_price*l.product_qty*u.factor, 0.0) / rcr.rate)::decimal(16,2) as negociation,

                    sum(t.standard_price*l.product_qty*u.factor)::decimal(16,2) as price_standard,
                    (sum(l.product_qty*l.price_unit)/NULLIF(sum(l.product_qty*u.factor),0.0))::decimal(16,2) as price_average
                from purchase_order s
                    left join purchase_order_line l on (s.id=l.order_id)
                        left join product_product p on (l.product_id=p.id)
                            left join product_template t on (p.product_tmpl_id=t.id)
                    left join product_uom u on (u.id=l.product_uom)
                    left join product_pricelist pl on (s.pricelist_id=pl.id)
                        left join res_currency rc on (pl.currency_id=rc.id)
                            left join res_currency_rate rcr on (rc.id=rcr.currency_id),
                res_partner rp
                        
                where l.product_id is not null and rp.id = s.partner_id
                group by
                    p.default_code,
                    s.company_id,
                    s.create_uid,
                    s.partner_id,
                    l.product_qty,
                    u.factor,
                    s.location_id,
                    l.price_unit,
                    s.date_approve,
                    l.date_planned,
                    l.product_uom,
                    date_trunc('day',s.minimum_planned_date),
                    s.partner_address_id,
                    s.pricelist_id,
                    s.validator,
                    s.dest_address_id,
                    l.product_id,
                    t.categ_id,
                    s.date_order,
                    to_char(s.date_order, 'YYYY'),
                    to_char(s.date_order, 'MM'),
                    to_char(s.date_order, 'YYYY-MM-DD'),
                    s.state,
                    s.warehouse_id,
                    u.uom_type, 
                    u.category_id,
                    u.id,
                    rp.first_partner_categ,
                    s.first_invoice_date                    
       
            )
        """)


purchase_report()

